Borrowing for investing is usually a bad decision. One must invest only money he affords to lose. The only "good" way to borrow for investing is if you have plenty of wealth, but it's already locked (properties, companies) and borrowing will provide liquidity.
Also for normal people, I'd suggest to invest only part of the savings, not all. Some should stay for unexpected problems.
However, these are (small) details. The initial rule stands.
But this is not case now as everyone wants to take advantage and always want to be rich instantly so they invest from borrowing, or if they have savings, they invest all in. The result is, they lose everything they have and are even obligated to pay their loans so they end up living miserable. But fot those who chose to be more smart and practical, they are living their lives into profits knowing they have less to lose, more to profit.
There's no difference between "now" and "then". People always want to get rich quick. And if they don't follow some common sense/basic rules, they can too easy end up broke.
So while your conclusion is correct, the first sentence is odd..
Not really bad to take some loan specially if we do see some opportunity and also we arent all the times having the cash to invest on which means that you would really be opting out to take some loan
because of having lack of cash but its not really that bad a decision
No, just no. The fact you lack cash means that if you get a loan to invest and the investment goes bad (i.e. bitcoin price falls greatly for longer term), you will have no means to pay back, making your life (even more) miserable. If you go on this path you will also have no means to wait until the investment price gets back on profit (which, in case of Bitcoin did always happen until now, sooner or later).
PS. You should improve your writing style, it's hart to read/understand.